Paper bottle and method of manufacturing the same



June 12, 1934. K H ET AL Q 1,962,199

PAPER BOTTLE AND METHOD OF MANUFACTURING THE SAME Filed July 18. 1931 3Shets-She et Juhe 12, 1934.

| B. KOCH El AL PAPER BOTTLE AND METHOD OF MANUFACTURING THE SAME FiledJuly 18 1931 s Sheets-Sheet 2 bv/ENToR; LydLcLB KqC/l? Andn|'aur Endur-June 12, 1934.

| B. KOCH ETAL 1,962,199

PAPER BOTTLE AND METHOD OF MANUFACTURING THE SAME I Filed July 18. 19313 Sheets-Sheet 3 fill? S zes-ma); I.

Awe-urns -L ydm B Kach- -'Rncl1:'Emr Bucharig/mfg Patented June 12, 1934PAPER BOTTLE AND METHOD OF MANU- FACTURING THE SAME Lydia B. Koch, NewYork, N. Y., and Andrew -.-Bodor, Newark, N. J., assignors toeReinforcedPaper'Bottle Corporation, New York, N. Y., a. corporation of DelawareApplication July 18, 1931, Serial No. 551,752 4 Claims; (01. 229-45) Ourinvention relates to improvements in paper bottles and the method ofmanufacturing the same, and the object of the invention is to devise apaper bottle which will be rigid in construction and cheap in cost; afurther object is to devise a bottle which will be particularlysusceptible for use for milk and other liquids; a still further objectis to construct a paper bottle which, in

shape, will simulate the appearance of an ordinary glass milk bottle andwhich will be leakproof.

And a most important object is to devise a practical method, the stepsof which must be followed in order to produce a perfect bottle comprisedentirely of paper at a minimum cost.

With these and other objects in view which will hereinafter appear, ourinvention consists of a paper bottle and a method for its manufacture,all as hereinafter more particularly described and illustrated in theaccompanying drawings in which:--

Fig. 1 is a plan view of the blank whereby the upper and lower portionsof the paper bottle is formed up.

Fig. 2 is a plan view of bottom.

Fig. 3 is a diminutive view of an alternative form of connecting theupper and lower portions of the blank together.

Fig. 4 is a vertical section showing the double the disc forming thewall formation of the bottle after it has been.

wound to form the body of the bottle.

Fig. 5 is a sectional plan through the line 5-5 Fig. 4, full size, withthickness of wall exaggerated.

Fig. 6 is a sectional plan through the line 6-6 Fig. 4.

Fig. Tis a vertical section showing the first operation after thewinding of the body of the bottle.

Fig. 8 is a vertical section showing the result of the second operationafter Fig. 7.

Fig. 9 is a vertical section showing the result of the third operation,which however may be dispensed with;

Fig. 10 is a similar view showing the result of the finaloperation forforming up the corrugated upper portion of the bottle and the neck.

Fig. 11 is a similar View to Fig. 10 showing the result of the firstoperation for inserting the paper bottom.

Fig. 12 is a perspective detail of the flanged I bottom before beingserted. a Fig. 13 is a vertical view showing the result 0 finally formedup and inthe final operation for completing the bottom and the bottle.

Fig. 14 is a side elevation of the bottle complete.

Fig. 15 is a cross section showing the type of corrugations. v

In the drawings like characters of reference indicate correspondingparts. 7 In Fig. 1 the blank is half scale to form up a bottle of pintsize and in the Figures '7, 8, 9, 10, 11, 12, 13, 14, and 15 the scaleis the same. Y

In Figures 2, 5 and 6 the scale is full size but in Fig. 3 the scale isdiminutive in relation to Fig. 1. The thickness of the paper throughoutis, of course, greatly exaggerated.

The bottle is made up of an are shaped blank 1, forming the uppertapered portion of the bottle and a rectangular blank 2 forming thelower portion or wall of the bottle. These portions 1 and 2 are pastedor otherwise secured together at the end at which they are fed into themachine as clearly shown in Fig. 1. i

In Fig. 3 however, the portions 1' and 2' are integral being connectedby a neck 3 at the end at which the blanks are fed into the machine.Approximately half the blanks 1 and 2 have 86 pasted surfaces asindicated by the dotted areas of the blank and the inner edge of the areshaped portion has a strip or film of paste 4 extending from the pastedarea to the point 3 which is also are shaped.

5 is the bottom which is made of paper and is circular asindicated andturned up at 5 circularly to form a flange 5 see Fig. 12.

The lower portion ofthe bottle is wound upon itself to a doublethickness and secured together 90 or therearound by the pasted area 2the ends of. the wind 2 and 2 overlapping as indicated in Fig. 6 thesubstantially central portion of the blank 2 as circularly wound. Itwill be understood, however, that the are shaped portion 1 is wound uponthe mandrel at the same time thereby causing the pasted arc-shaped strip4 to adhere to the adjacent edge of the portion 2 as it is being woundand actually interwinding with the portion 2 as indicated in Fig. 5, aswell as overlapping as indicated in Figs. 4 to 13. The interwinding willbe understood by again referring to Fig. 5 in which it will be seen thatthe end 2 of the portion 2 lies inside the end 1 of the portion 1 whichextends circularly past 10! the end 2 The central portion of theportion- 2 lies inside the central portion of the portion 1 and the endportion 2 of the portion 2 lies outside and overlaps the end portion 1of the portion 1. In short, the ends 1 and 2 of the 11 two portionsoverlap respectively and arelocated to the outside of the other ends 2and 1 'of the portions. These portions all overlap bothvertically andhorizontally and break joint.

As a result the bottle is stiffened materially from top to bottom. Whenactually manufactured the paper is so thin that it is difiicult toappreciate the thickness of the. joint without careful scrutiny.

What we have hereinbefore described as will be understood relates to theprimary winding of the body of the bottle upon the mandrel, that is tosay, to form the lower cylindrical portion of curl 5 is furtherinturnedpreferably by spinning into somewhat oval form 6 as indicated inthis figure.

The next step is indicated in Fig. 9 in which a swedging operation isperformed to partially form an interior seat to receive the ordinaryclosure disc as'at '7. It may, however, be dispensed with, depending onthe paper used.

The next step is to repeat the wedging operation so as to complete theformation of the seat 7 and at the same time form the annularenlargement round the neck and the longitudinal corrugations 15extending from the-lower end of the taperedportion of the bottle intosuch annular enlargement as indicated in Fig. 10.

Having completed the upper portion of the bottle it is now necessary toinsert and spin in the bottom. The next step therefore is indicated inFig. 11 in which the disc 5 provided with the depending flange 5is.inserted by suitable means into the open bottom with the bottom ofthe flange considerably above the bottom edge of the bottle. Havinginserted the disc 5 we apply afilm of paste 8 as indicated in Fig. 12and spin in the outer edge of the bottom of the bottle intimately so asto wind in the extreme edge 9 with the extreme upturned end 10 of theflange 5 opposite to it and at the same time form the depressed bottom11 and the flat end 12 of the,

combined'flange. It will be understood that this spinning can be onlysatisfactorily accomplished by using acollapsible mandrel such asdescribed in the United States patent of Bodor No. 1,660,411.

The bottle is now completeas indicated in vertical section Fig.,13 andin the elevation in Fig. 14. It will, ofcourse, be understood that theproportions of the various parts are not exac but clearly indicate itsformation. Although we preferably use a film of paste for theinterwinding of the flange}; with the bottom edge of the bottle it willbe understood that such film may be dispensed with but it is preferablyused to insure againstany possibility of leakage.

We may also say that we preferably use a circular film of lubricatingmoisture 13 at the top of the body and a similar film 14 nearthe bottomof the body as indicated in Fig. 4 in order to facilitate the spinningof both the top edge and the bottom edge as hereinbefore described, byrendering the paper more pliable.

After a great deal of experiment extending over years we.have produced asuccessful machine and find in practice, therefore, that the stepsindicated in the method hereinbefore described must be followed inrotation to produce an absolutely satisfactory bottle.

Although in this specification we describe two means of connecting theare shaped blank and the rectangular blank at the feed end, it will, ofcourse, be understood that it is a matter of choice which one may beadopted.

What we claim as our invention is:

1. A blank for forming the neck and body portion of a paper bottlecomprising an arc-shaped part adapted to constitute the neck or upperpor tion of the bottle and a rectangular part adapted to constitute thebody portion of the bottle, both parts being connected by a neck at theend designed to feed first into the machine.

. 2. A blank for forming the neck and body portion of a paper bottlecomprising an arc-shaped part adapted to constitute the neck or upperportion of the bottle and having half the area remote from the feedingof the blank coated with an adhesiv and a strip extending in are shapedform from t e neck to such coated area, and a rectangular part adaptedto constitute the body portion of the bottle and having half the arearemote from the feeding end of the blank provided with an adhesivesurface, both parts being connected bya neck at the end designed to feedfirst into the machine.

3. In a paper .bottle, a neck portion, the top of which is provided withan annular enlargement and the material of which is wound upon itself toa thickness of at least two plies, the upper end of the neck portionbeing intumed upon itself to constitute a circumfere tial reinforcementat the top of the bottle, a portion, the material of which is wound uponitself to'a thickness of at least two plies, a closure disc engagingseat formed inthe inturned upper part of the neck portion, andlongitudinal reinforcing ribs formed in the tapered portionof the bodyso that the depressions between the ribs extend up into and form thecorrugated portion extending up into the annular enlargement of the neckfor the purpose specified. '1 4. In a paper bottle, having the upperportion,

tapered and formedwith'a neck of less exterior. diameter than the majorportion, and intumed:

ing corrugations extending upwardly into and forming an annularenlargement of the neck.

LYDIA B. KOCH. ANDREW BODOR.

